IME for Mus: Use ui::InputMethodChromeOS to provide logic for ime driver.

chrome/browser/ui/views/ime_driver/input_method_bridge_chromeos_unittest.cc

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <stdint.h>
+
+#include "base/bind.h"
+#include "base/macros.h"
+#include "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
+#include "base/strings/utf_string_conversions.h"
+#include "chrome/browser/ui/views/ime_driver/input_method_bridge_chromeos.h"
+#include "content/public/test/test_browser_thread_bundle.h"
+#include "mojo/public/cpp/bindings/binding.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/base/ime/ime_bridge.h"
+#include "ui/events/event.h"
+#include "ui/events/event_constants.h"
+#include "ui/events/event_utils.h"
+#include "ui/events/keycodes/dom/dom_code.h"
+#include "ui/events/keycodes/dom/dom_key.h"
+#include "ui/events/keycodes/keyboard_code_conversion.h"
+#include "ui/events/keycodes/keyboard_codes.h"
+
+enum class CompositionEventType {
+  SET,
+  CONFIRM,
+  CLEAR,
+  INSERT_TEXT,
+  INSERT_CHAR
+};
+
+struct CompositionEvent {
+  CompositionEventType type;
+  base::string16 text_data;
+  base::char16 char_data;
+};
+
+class TestTextInputClient : public ui::mojom::TextInputClient {
+ public:
+  explicit TestTextInputClient(ui::mojom::TextInputClientRequest request)
+      : binding_(this, std::move(request)) {}
+
+  CompositionEvent WaitUntilCompositionEvent() {
+    if (!receieved_event_.has_value()) {
+      run_loop_ = base::MakeUnique<base::RunLoop>();
+      run_loop_->Run();
+      run_loop_.reset();
+    }
+    CompositionEvent result = receieved_event_.value();
+    receieved_event_.reset();
+    return result;
+  }
+
+ private:
+  void SetCompositionText(const ui::CompositionText& composition) override {
+    CompositionEvent ev = {CompositionEventType::SET, composition.text, 0};
+    receieved_event_ = ev;
+    if (run_loop_)
+      run_loop_->Quit();
+  }
+  void ConfirmCompositionText() override {
+    CompositionEvent ev = {CompositionEventType::CONFIRM, base::string16(), 0};
+    receieved_event_ = ev;
+    if (run_loop_)
+      run_loop_->Quit();
+  }
+  void ClearCompositionText() override {
+    CompositionEvent ev = {CompositionEventType::CLEAR, base::string16(), 0};
+    receieved_event_ = ev;
+    if (run_loop_)
+      run_loop_->Quit();
+  }
+  void InsertText(const std::string& text) override {
+    CompositionEvent ev = {CompositionEventType::INSERT_TEXT,
+                           base::UTF8ToUTF16(text), 0};
+    receieved_event_ = ev;
+    if (run_loop_)
+      run_loop_->Quit();
+  }
+  void InsertChar(std::unique_ptr<ui::Event> event) override {
+    ASSERT_TRUE(event->IsKeyEvent());
+    CompositionEvent ev = {CompositionEventType::INSERT_CHAR, base::string16(),
+                           event->AsKeyEvent()->GetCharacter()};
+    receieved_event_ = ev;
+    if (run_loop_)
+      run_loop_->Quit();
+  }
+
+  mojo::Binding<ui::mojom::TextInputClient> binding_;
+  std::unique_ptr<base::RunLoop> run_loop_;
+  base::Optional<CompositionEvent> receieved_event_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestTextInputClient);
+};
+
+class InputMethodBridgeChromeOSTest : public testing::Test {
+ public:
+  InputMethodBridgeChromeOSTest()
+      : thread_bundle_(content::TestBrowserThreadBundle::IO_MAINLOOP) {}
+  ~InputMethodBridgeChromeOSTest() override {}
+
+  void SetUp() override {
+    ui::IMEBridge::Initialize();
+
+    ui::mojom::TextInputClientPtr client_ptr;
+    client_ = base::MakeUnique<TestTextInputClient>(GetProxy(&client_ptr));
+    input_method_ = base::MakeUnique<InputMethodBridge>(std::move(client_ptr));
+  }
+
+  bool ProcessKeyEvent(std::unique_ptr<ui::Event> event) {
+    handled_.reset();
+
+    input_method_->ProcessKeyEvent(
+        std::move(event),
+        base::Bind(&InputMethodBridgeChromeOSTest::ProcessKeyEventCallback,
+                   base::Unretained(this)));
+
+    if (!handled_.has_value()) {
+      run_loop_ = base::MakeUnique<base::RunLoop>();
+      run_loop_->Run();
+      run_loop_.reset();
+    }
+
+    return handled_.value();
+  }
+
+  std::unique_ptr<ui::Event> UnicodeKeyPress(ui::KeyboardCode vkey,
+                                             ui::DomCode code,
+                                             int flags,
+                                             base::char16 character) const {
+    return base::MakeUnique<ui::KeyEvent>(ui::ET_KEY_PRESSED, vkey, code, flags,
+                                          ui::DomKey::FromCharacter(character),
+                                          ui::EventTimeForNow());
+  }
+
+ protected:
+  void ProcessKeyEventCallback(bool handled) {
+    handled_ = handled;
+    if (run_loop_)
+      run_loop_->Quit();
+  }
+
+  content::TestBrowserThreadBundle thread_bundle_;
+  std::unique_ptr<TestTextInputClient> client_;
+  std::unique_ptr<InputMethodBridge> input_method_;
+  std::unique_ptr<base::RunLoop> run_loop_;
+  base::Optional<bool> handled_;
+
+  DISALLOW_COPY_AND_ASSIGN(InputMethodBridgeChromeOSTest);
+};
+
+// Tests if hexadecimal composition provided by ui::CharacterComposer works
+// correctly. ui::CharacterComposer is tried if no input method extensions
+// have been registered yet.
+TEST_F(InputMethodBridgeChromeOSTest, HexadecimalComposition) {
+  struct {
+    ui::KeyboardCode vkey;
+    ui::DomCode code;
+    int flags;
+    base::char16 character;
+    std::string composition_text;
+  } kTestSequence[] = {
+      {ui::VKEY_U, ui::DomCode::US_U, ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN,
+       'U', "u"},
+      {ui::VKEY_3, ui::DomCode::DIGIT3, 0, '3', "u3"},
+      {ui::VKEY_0, ui::DomCode::DIGIT0, 0, '0', "u30"},
+      {ui::VKEY_4, ui::DomCode::DIGIT4, 0, '4', "u304"},
+      {ui::VKEY_2, ui::DomCode::DIGIT2, 0, '2', "u3042"},
+  };
+
+  // Send the Ctrl-Shift-U,3,4,0,2 sequence.
+  for (size_t i = 0; i < arraysize(kTestSequence); i++) {
+    EXPECT_TRUE(ProcessKeyEvent(
+        UnicodeKeyPress(kTestSequence[i].vkey, kTestSequence[i].code,
+                        kTestSequence[i].flags, kTestSequence[i].character)));
+    CompositionEvent ev = client_->WaitUntilCompositionEvent();
+    EXPECT_EQ(CompositionEventType::SET, ev.type);
+    EXPECT_EQ(base::UTF8ToUTF16(kTestSequence[i].composition_text),
+              ev.text_data);
+  }
+
+  // Press the return key and verify that the composition text was converted
+  // to the desired text.
+  EXPECT_TRUE(ProcessKeyEvent(
+      UnicodeKeyPress(ui::VKEY_RETURN, ui::DomCode::ENTER, 0, '\r')));
+  CompositionEvent ev = client_->WaitUntilCompositionEvent();
+  EXPECT_EQ(CompositionEventType::INSERT_TEXT, ev.type);
+  EXPECT_EQ(base::string16(1, 0x3042), ev.text_data);
+}
+
+// Test that Ctrl-C, Ctrl-X, and Ctrl-V are not handled.
+TEST_F(InputMethodBridgeChromeOSTest, ClipboardAccelerators) {
+  EXPECT_FALSE(ProcessKeyEvent(UnicodeKeyPress(ui::VKEY_C, ui::DomCode::US_C,
+                                               ui::EF_CONTROL_DOWN, 'C')));
+  EXPECT_FALSE(ProcessKeyEvent(UnicodeKeyPress(ui::VKEY_X, ui::DomCode::US_X,
+                                               ui::EF_CONTROL_DOWN, 'X')));
+  EXPECT_FALSE(ProcessKeyEvent(UnicodeKeyPress(ui::VKEY_V, ui::DomCode::US_V,
+                                               ui::EF_CONTROL_DOWN, 'V')));
+}